:root {
  --bg: #070b18;
  --bg-2: #0a0e1f;
  --card: rgba(255, 255, 255, 0.04);
  --card-2: rgba(255, 255, 255, 0.02);
  --border: rgba(255, 255, 255, 0.09);
  --text: #f3f5ff;
  --sub: #98a2c8;
  --indigo: #6c7cff;
  --violet: #9b5cff;
  --pink: #ff5c8a;
  --cyan: #38e0ff;
  --green: #34e8a2;
  --radius: 22px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
svg { display: block; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

.grad-text {
  background: linear-gradient(90deg, var(--indigo), var(--violet), var(--pink));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.glass {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.35);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
  cursor: pointer;
  border: 1px solid transparent;
  font-family: var(--font);
}
.btn svg { width: 18px; height: 18px; }
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn-lg { padding: 15px 32px; font-size: 16px; }
.btn-small { padding: 9px 20px; font-size: 14px; }
.btn-block { width: 100%; }
.btn-grad {
  background: linear-gradient(90deg, var(--indigo), var(--violet), var(--pink));
  color: #fff;
  box-shadow: 0 10px 30px rgba(124, 92, 255, 0.4);
}
.btn-grad:hover { box-shadow: 0 14px 40px rgba(124, 92, 255, 0.55); }
.btn-ghost {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.1); }

/* 导航 */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(7, 11, 24, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 64px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--indigo), var(--violet));
  color: #fff;
  box-shadow: 0 4px 16px rgba(108, 124, 255, 0.45);
}
.brand-mark svg { width: 17px; height: 17px; }
.brand-name { font-weight: 700; font-size: 17px; }
.brand-en { font-size: 12px; color: var(--sub); letter-spacing: 0.06em; }
.nav-links { display: flex; gap: 26px; margin-left: auto; }
.nav-links a { color: var(--sub); font-size: 14.5px; transition: color 0.2s; }
.nav-links a:hover { color: var(--text); }
.nav .btn { margin-left: 6px; }

/* Hero */
.hero {
  position: relative;
  padding: 170px 0 110px;
  overflow: hidden;
  background:
    radial-gradient(900px 480px at 85% -10%, rgba(108, 124, 255, 0.16), transparent 60%),
    radial-gradient(700px 420px at -10% 30%, rgba(155, 92, 255, 0.12), transparent 60%),
    linear-gradient(180deg, #0b1026 0%, var(--bg) 60%);
}
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
  pointer-events: none;
}
.orb-a { width: 420px; height: 420px; background: rgba(108, 124, 255, 0.35); top: -140px; right: 8%; }
.orb-b { width: 340px; height: 340px; background: rgba(255, 92, 138, 0.22); bottom: -120px; left: -80px; }
.orb-c { width: 240px; height: 240px; background: rgba(56, 224, 255, 0.14); top: 30%; left: 45%; }

.hero-inner {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 64px;
  align-items: center;
  position: relative;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--sub);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  margin-bottom: 22px;
}
.badge-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 10px var(--green);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}
.hero h1 { font-size: clamp(38px, 5.4vw, 62px); line-height: 1.15; font-weight: 800; letter-spacing: -0.02em; }
.hero-sub { margin-top: 18px; color: var(--sub); font-size: 17px; max-width: 520px; }
.hero-actions { display: flex; gap: 14px; margin-top: 30px; flex-wrap: wrap; }
.hero-chips { display: flex; gap: 10px; margin-top: 26px; flex-wrap: wrap; }
.hero-chips span {
  font-size: 12.5px;
  color: var(--sub);
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
}

/* 仪表盘卡片 */
.gauge-card { padding: 30px 28px 24px; }
.gauge { position: relative; width: 230px; margin: 0 auto; }
.gauge svg { width: 100%; }
.gauge circle {
  fill: none;
  stroke-width: 16;
  stroke-linecap: round;
  transform: rotate(135deg);
  transform-origin: 50% 50%;
}
.gauge-bg { stroke: rgba(255, 255, 255, 0.07); }
.gauge-fg {
  stroke: url(#gaugeGrad);
  stroke-dasharray: 553;
  stroke-dashoffset: 553;
  transition: stroke-dashoffset 1.6s cubic-bezier(0.22, 1, 0.36, 1);
}
.gauge-center {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  text-align: center;
}
.gauge-value { font-size: 44px; font-weight: 800; letter-spacing: -0.02em; }
.gauge-value em { font-style: normal; font-size: 14px; color: var(--sub); margin-left: 4px; font-weight: 600; }
.gauge-label { color: var(--sub); font-size: 13px; margin-top: 4px; }
.gauge-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 24px;
}
.gauge-metrics div {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 8px;
  text-align: center;
}
.gauge-metrics span { display: block; color: var(--sub); font-size: 11.5px; }
.gauge-metrics b { font-size: 17px; }

/* 区块 */
.section { padding: 96px 0; }
.section-head { text-align: center; margin-bottom: 52px; }
.section-head h2 { font-size: clamp(26px, 3.6vw, 38px); font-weight: 800; letter-spacing: -0.02em; }
.section-head p { color: var(--sub); margin-top: 10px; font-size: 15.5px; }

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.card { padding: 30px 26px; transition: transform 0.25s, border-color 0.25s; }
.card:hover { transform: translateY(-6px); border-color: rgba(255, 255, 255, 0.18); }
.card-icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  margin-bottom: 18px;
}
.card-icon svg { width: 22px; height: 22px; }
.c-cyan { background: rgba(56, 224, 255, 0.12); color: var(--cyan); }
.c-violet { background: rgba(155, 92, 255, 0.12); color: var(--violet); }
.c-pink { background: rgba(255, 92, 138, 0.12); color: var(--pink); }
.c-indigo { background: rgba(108, 124, 255, 0.12); color: var(--indigo); }
.card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.card p { color: var(--sub); font-size: 13.5px; }

/* 终端 */
.terminal-sec { padding-top: 40px; }
.terminal { max-width: 680px; margin: 0 auto; overflow: hidden; }
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 13px 18px;
  border-bottom: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.25);
}
.dot { width: 11px; height: 11px; border-radius: 50%; }
.dot.r { background: #ff5f57; }
.dot.y { background: #febc2e; }
.dot.g { background: #28c840; }
.terminal-title { margin-left: 8px; color: var(--sub); font-size: 12.5px; font-family: ui-monospace, monospace; }
.terminal-body { padding: 20px 22px 24px; font-family: ui-monospace, "SF Mono", Consolas, monospace; font-size: 13.5px; }
.terminal-body p { margin-bottom: 8px; }
.t-prompt { color: var(--green); font-weight: 700; margin-right: 8px; }
.t-dim { color: var(--sub); }
.t-ok { color: var(--green); }
.t-result { color: var(--text); }
.t-result b { color: var(--cyan); }

/* 网页测速 */
.speedtest-sec { background: radial-gradient(700px 400px at 50% 0%, rgba(155, 92, 255, 0.1), transparent 70%); }
.webtest-card { max-width: 640px; margin: 0 auto; padding: 34px 32px; }
.webtest-top { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.webtest-value b { font-size: 54px; font-weight: 800; letter-spacing: -0.03em; }
.webtest-value span { color: var(--sub); font-size: 16px; margin-left: 6px; }
.webtest-status { color: var(--sub); font-size: 14px; padding-bottom: 8px; }
.progress {
  height: 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  margin: 26px 0 24px;
  overflow: hidden;
}
.progress-fill {
  width: 0%;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--indigo), var(--violet), var(--pink));
  transition: width 0.3s ease;
}
.webtest-actions { display: flex; gap: 12px; }
.webtest-note { color: var(--sub); font-size: 12.5px; margin-top: 18px; }

/* 下载 */
.download-sec {
  background:
    radial-gradient(700px 380px at 15% 100%, rgba(108, 124, 255, 0.12), transparent 60%),
    radial-gradient(600px 380px at 90% 0%, rgba(255, 92, 138, 0.08), transparent 60%);
}
.download-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; max-width: 880px; margin: 0 auto; }
.download-card { padding: 34px 30px; }
.download-card h3 { font-size: 19px; margin-bottom: 14px; }
.apk-icon {
  display: grid;
  place-items: center;
  width: 62px;
  height: 62px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--indigo), var(--violet), var(--pink));
  color: #fff;
  box-shadow: 0 10px 30px rgba(124, 92, 255, 0.45);
  margin-bottom: 18px;
}
.apk-icon svg { width: 28px; height: 28px; }
.meta { list-style: none; margin-bottom: 22px; }
.meta li { color: var(--sub); font-size: 14px; padding: 5px 0; }
.meta b { color: var(--text); font-weight: 600; }
.dl-sub { color: var(--sub); font-size: 14px; margin-bottom: 12px; }
.code {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  overflow-x: auto;
}
.code code { font-family: ui-monospace, Consolas, monospace; font-size: 13px; color: var(--green); white-space: nowrap; }
.changelog { list-style: none; }
.changelog li { color: var(--sub); font-size: 13.5px; padding: 4px 0; }
.changelog b { color: var(--cyan); font-weight: 600; margin-right: 6px; }

/* 页脚 */
.footer {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 44px 0 34px;
  background: rgba(0, 0, 0, 0.25);
}
.footer-main { display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
.footer-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.footer-brand .brand-mark { width: 28px; height: 28px; border-radius: 8px; }
.footer-brand .brand-mark svg { width: 15px; height: 15px; }
.footer-links { display: flex; gap: 22px; }
.footer-links a { color: var(--sub); font-size: 14px; transition: color 0.2s; }
.footer-links a:hover { color: var(--text); }
.footer-note { color: var(--sub); font-size: 13px; margin-top: 22px; max-width: 720px; }
.footer-copy { color: var(--sub); font-size: 12.5px; margin-top: 10px; }

/* 滚动出现动画 */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero { padding-top: 140px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .download-grid { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .nav-links { display: none; }
  .grid-4 { grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; }
  .section { padding: 72px 0; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}